Graphical user interface for a display screen or portion thereof



FIG. 1 is a front view of a graphical user interface for a displayscreen or portion thereof showing our new design; and,

FIG. 2 is a front view of a second embodiment thereof.

The OpenPeak trademark in the upper left corner of each of the figuresis the property of OpenPeak Inc. Trademarks are the property of theirrespective owners. The photos shown in each of the figures are subjectto copyright protection. Copyrights are the property of their respectiveowners.

The broken line showing of the display screen or portion thereof in thefigures is not part of the claimed design.

The ornamental design for a graphical user interface for a displayscreen or a portion thereof, as shown and described.